Novel heat emitting welding flux and welding method

A technology of exothermic flux and welding method, applied in the direction of aluminothermic welding equipment, welding medium, welding equipment, etc., can solve the problems of inconvenient transportation, environmental pollution, high transportation cost, etc., achieve welding efficiency and welding effect, and operate Convenience, efficiency and low cost of air freight

Active Publication Date: 2014-09-24
宁波中创焊接技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After welding, the aluminum film bags for packaging become waste. Obviously, the storage of powdery exothermic flux requires a large number of aluminum film bags, so the cost is high; the packages need to be torn apart one by one during welding, and isolation gaskets need to be placed to cover them. Diversion holes are used to ensure good sealing, and the operation is not convenient enough; after a proje

Method used

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  • Novel heat emitting welding flux and welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Composition of raw materials: 100 grams of powdery exothermic flux, 0.5 grams of graphite powder, and 0.5 grams of talcum powder. Put the raw materials into the mixer one by one and mix them evenly, then take them out, and use a mechanical tablet press to press the raw materials into several disc shapes for later use. As a specific requirement, the diameter of the disc-shaped exothermic flux 1 should be larger than the diameter of the mold diversion hole, so that the disc-shaped exothermic flux 1 can be placed directly above the diversion hole 5 without placing an isolation gasket , thus simplifying the welding process.

[0025] Specifically, the welding process of the present invention is as follows: clean the wire 7 and the mold 4, remove the oxide layer on the surface with a steel brush, heat the mold 4 with a blowtorch to remove moisture, then put the wire 7 into the mold 4, and fasten it The fixture is used to fix the mold 4; above the diversion hole 5 of the mold...

Embodiment 2

[0027] Composition of raw materials: 100 grams of powdery exothermic flux, 0.5 grams of graphite powder, and 0.5 grams of talcum powder. Put the raw materials into the mixer one by one and mix them evenly, then take them out, and use a mechanical tablet press to press the raw materials into several disc shapes for later use. Other specific requirements are the same as those in Embodiment 1, and will not be repeated here.

[0028] Specifically, the welding process of the present invention is as follows: clean the wire 7 and the mold 4, remove the oxide layer on the surface with a steel brush, heat the mold 4 with a blowtorch to remove moisture, then put the wire 7 into the mold 4, and fasten it The fixture is used to fix the mold 4; above the diversion hole 5 of the mold 4 (below the diversion hole 5 is the welding cavity 6), directly place a plurality of disc-shaped exothermic fluxes 1 that meet the quantity requirements, close the cover 2, and ignite the electron The device ...

Embodiment 3

[0031] Composition of raw materials: 130 grams of powdery exothermic flux, 0.3 grams of graphite powder, and 1 gram of talcum powder. Put the raw materials into the mixer in turn and mix them evenly, then take them out, press the raw materials into several square tablets with a mechanical tablet press, and set aside. The minimum passage size of the square piece is larger than the diameter of the diversion hole. The welding process is the same as that in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a novel heat emitting welding flux which comprises three constituents in parts by weight: 100-150 parts of powdery heat emitting welding flux, 0.3-1 part of graphite powder and 0.3-1 part of talcum powder; the three constituents are uniformly mixed and then pressed into flake. Meanwhile, the invention further discloses a welding method utilizing the novel heat emitting welding flux, wherein the igniting manners of the heat emitting welding flux comprise igniting gun ignition and electronic igniting device ignition. The novel heat emitting welding flux has the benefits that the new form, namely the flaky heat emitting welding flux, can be stacked in a multilayered manner to be packaged so as to save packing material and then reducing the packaging cost and the recycle cost of the waste; moreover the transportation of the flaky emitting welding flux is relatively convenient, and the air transportation cost is low; in welding, the flaky emitting welding flux in certain number can be taken according to needs, isolating gaskets are not needed to be used, the operation is relatively convenient and efficient, and the welding efficiency and the welding effect are better; through the adoption of the ignition manner of electronic igniting device, personnel remote control can be realized, and the operation is relatively convenient, efficient and safe.

Description

technical field [0001] The invention relates to a novel exothermic flux and a welding method using the exothermic flux. Background technique [0002] Exothermic welding (that is, hot flux welding, which is literally translated as exothermic welding in the power industry) is a welding in which the flux is ignited by an igniter (or electric spark), and the flux undergoes a redox reaction to release a large amount of heat and simultaneously reduce the filler metal. In this way, the filler metal is finally cooled in the mold cavity to form a joint, which is a kind of self-propagating high-temperature synthesis technology. When exothermic welding is used, the interface is completely fused. Because it is a molecular combination in the true sense, the cross-sectional area of ​​the joint is generally more than twice the cross-sectional area of ​​the connected conductor. It has good electrical conductivity and high overload resistance, high temperature resistance and corrosion resis...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K28/00
CPCB23K23/00B23K35/362
Inventor 杨洪刚李彦国郑礼莎
Owner 宁波中创焊接技术有限公司
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